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Re: [IRCA] TP DX in Seattle on October 7
- Subject: Re: [IRCA] TP DX in Seattle on October 7
- From: Guy Atkins <dx@xxxxxxxxxxxxx>
- Date: Wed, 8 Oct 2014 10:46:36 -0700
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Interesting! I've been hearing buzzing on the same TPs as Gary and Bruce,
in addition to 594 and 693 which have had the strongest accompanying buzz
QRM. I thought it was just some local (neighborhood) interference.
I can knock down almost all of the buzz using the noise blanker in SDR
programs, but the exact setting is very touchy. Even a bit too blanking
action much causes severe audio distortion. When it works correctly the
noise is completely removed; you have to readjust for different frequencies
as you tune around, though.
73,
Guy Atkins
Puyallup, WA
> ---------- Forwarded message ----------
> From: d1028gary@xxxxxxx
> To: irca@xxxxxxxxxxxxxxxx
> Cc:
> Date: Wed, 8 Oct 2014 00:16:51 -0400
> Subject: Re: [IRCA] TP DX in Seattle on October 7
>
>
> Hi Bruce,
>
> Thanks for your daily TP-DXing reports, which always provide an
> interesting comparison..
>
> <<< JOIB-747 has been received with a reasonably
> good carrier but with the audio buried in a loud buzz that only affects
> a narrow part of the band near 750. >>>
>
> Actually, even here in Puyallup, that same loud buzz has been burying
> 747-JOIB's signal on most mornings. As you said, the buzz is only
> noticeable around 750 kHz, but it is pretty obnoxious. Since you also have
> noticed it, it must be an issue throughout the entire Puget Sound area.
>
> Occasionally 747-JOIB's signal is strong enough here to get through the
> buzz, like it was this morning around 1323. Otherwise the buzz rules the
> 747 frequency here (along with a similar buzz covering up 648 here, unless
> VOR's signal is unusually strong).
>
> 73, Gary
>
> 747-JOIB this morning (at 1323) through the buzz and Portland splatter
> http://www.mediafire.com/view/2b4825oon42damq/747-JOIB-1323z100714PL380.MP3
>
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